Annual report [Section 13 and 15(d), not S-K Item 405]

Stock Based Compensation - FV Assumptions 2010 Plan Stock Options (Details)

v3.25.1
Stock Based Compensation - FV Assumptions 2010 Plan Stock Options (Details) - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Stock-based compensation    
Number of shares, Granted 34,170  
Employee Stock Option | 2010 Plan    
Stock-based compensation    
Minimum age required for employees to qualify for immediate vesting of award 55 years  
Threshold years required for retirement age 70 years  
Weighted average assumptions    
Dividend yield 0.00% 0.00%
Expected volatility 65.00%  
Risk-free interest rate 4.35%  
Expected term 5 years 9 months 14 days 5 years 9 months 14 days
Weighted-average grant-date fair value (in dollars per share) $ 15.32 $ 13.18
Employee Stock Option | 2010 Plan | Minimum    
Weighted average assumptions    
Expected volatility   66.00%
Risk-free interest rate   3.58%
Employee Stock Option | 2010 Plan | Maximum    
Weighted average assumptions    
Expected volatility   70.00%
Risk-free interest rate   4.73%
Employee Stock Option | 2010 Plan | Employees    
Stock-based compensation    
Vesting period 3 years  
Employee Stock Option | 2010 Plan | Directors    
Stock-based compensation    
Vesting period 1 year